Process for producing a display device by deforming thermoplastic spacer particles

Abstract

There is provided a ferroelectric liquid crystal device wherein the yellowing due to a cell thickness increase or occurrence of voids is suppressed. The ferroelectric liquid crystal device includes a pair of substrates each having thereon a group of electrodes for liquid crystal drive, and a layer of ferroelectric liquid crystal disposed between the substrates, wherein thermosetting adhesive particles and thermoplastic polymer particles having a diameter which is 1.5-5 times the liquid crystal layer thickness are dispersed and pressed between the substrates. The polymer particles preferably have a glass transition temperature of at most -20° C.

What is claimed is: 
     
       1. A process for producing a liquid crystal device comprising, in this order, the steps of: dispersing resilient thermoplastic polymer particles at a density of at least 80 particles/mm 2  on at least one of a pair of substrates, said polymer particles having a diameter (d) and a glass transition point of at most -20° C.,   superposing the pair of substrates opposite to each other so as to sandwich the thermoplastic polymer particles under application of heat and pressure to deform the thermoplastic polymer particles into a columnar shape and attain a prescribed gap (g) between the substrates, wherein said prescribed gap (g) and said particle diameter (d) satisfy the relationship d/5.0<g<d/1.5; and   filling the gap between the substrates with a chiral smectic liquid crystal.